Polyamines are aliphatic compounds containing more than two amino groups in the molecule, and polyamines are often found to be associated with DNA and RNA in bacteria and viruses. This allows the nucleic acid molecule to be somewhat stable, similar to the action of histones on DNA in eukaryotic cells. Important polyamines are spermidine and sper-mine. Jingjing and spermine are named after being first found in semen. But in fact both exist in most organizations. They are potent growth promoters for microbial and mammalian cell membranes in culture and have multiple effects on nucleic acid metabolism. The sperm and spermine in the body are synthesized by ornithine. Polyamines are also a class of biologically active low molecular aliphatic nitrogenous bases. According to the number of amino groups in the molecule, it can be classified into a diamine, a triamine, a tetraamine and the like. Common diamines are putrescine [H2N-(CH2)4-NH2, putroscine or put], cadaverine [H2N-(CH2)5-NH2, cadavorine, or cad]; triamine is spermidine [H2N-( CH2)4-NH-(CH2)3-NH3,spermidine, or spd]; tetraamine is spermine [H2N--(CH2)3-NH(CH2)4-NH(CH2)3-NH2,spermine, or Spm]. Polyamines are ubiquitous in the roots, stems, leaves, flowers, fruits, seeds, tubers and embryos of plants. Its main synthetic precursors are arginine, lysine and methionine. Putrescine is at the center of the polyamine biosynthetic pathway. Arginine decarboxylase (ADC) is a key enzyme in the synthesis of polyamines by higher plants. IAA, GA, and CTK can promote the activity of ADC, while ABA and ethylene can inhibit the activity of ADC. Because polyamines exist in polycationic state at physiological pH, they are easily combined with negatively charged nucleic acids and proteins to regulate the biosynthesis of DNA, RNA and proteins, promote growth, stabilize membrane structure, delay aging and enhance The effect of stress resistance.
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Amino compound
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Oxy-containing amino compound
Cycloalkylamines, aromatic monoamines, aromatic polyamines and derivatives and salts thereof
Acyclic monoamines, polyamines and their derivatives and salts
Amide compound
Sulfonic acid amino compound
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Alcohols, phenols, phenolic compounds and derivatives
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2-cycloalcohol
Halogenated, sulfonated, nitrated or nitrosated derivatives of alcohols
Extremely halogenated, sulfonated, nitrated or nitrosated derivatives of phenols
Phenol and its halogenated, sulfonated, nitrated or nitrosated derivatives
Acyclic alcohol
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Nitrogen-containing compound
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Nitrile compound
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Organic derivative of hydrazine or hydrazine
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Terpenoid
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Ether compounds and their derivatives
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Ether, ether alcohol
Halogenation, sulfonation, nitration or nitrosation of ethers, ether alcohols, ether phenols
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Aldehyde
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Carboxylic compounds and derivatives
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Cyclic carboxylic acid
Halogenation, sulfonation, nitration or nitrosation of carboxylic acids
Halogenation, sulfonation, nitration or nitration of carboxylic anhydrides
Carboxylic acid halide
Carboxylic esters and their derivatives
Salt of carboxylic acid ester and its derivatives
Acyclic carboxylic acid
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Hydrocarbon compounds and their derivatives
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Aromatic hydrocarbon
Cyclic hydrocarbon
Hydrocarbon sulfonate
Hydrocarbon halide
Hydrocarbon nitrite
Acyclic hydrocarbon
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Ketone compound
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Alkyl ureas and their derivatives and salts
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Inorganic acid ester
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Heterocyclic compound
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Diazo, azo or azo compound
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Organosilicon compound
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Organometallic compound
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Organic palladium
Organic germanium, cobalt, strontium, barium, gallium, germanium, germanium, germanium, germanium, etc.
Organic calcium
Zirconium
Organic potassium
Organic
Organic lithium
Organic
Organic aluminum
Organotin
Organic manganese
Organic sodium
Organic nickel
Organic titanium
Organic iron
Organic copper
Organotin
Organic zinc
Organic
Organic
Organic germanium, mercury, silver, platinum, etc.
Organic germanium, antimony, bismuth, tungsten, antimony, bismuth, lead, vanadium, molybdenum, chromium, antimony, etc.
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Organic sulfur compound
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Organic phosphine compound
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Organometallic salt
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Organic fluorine compound
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Fluorobenzoic acid series
Fluorobenzonitrile series
Fluorobenzaldehyde series
Fluorobenzyl alcohol series
Fluoroanisole series
Fluoroaniline series
Fluorophenylacetic acid series
Fluorophenol series
Fluorobenzoic acid series
Fluoronitrobenzene series
Fluoropyridine series
Potassium fluoroborate series
Fluorobenzyl alcohol series
Fluorotoluene series
Fluorine red series
Fluoroethane series
Fluoropropane series